Nuctech Company Limited

Tsinghua University

Other

Huawei Technologies Co., Limited

Nutech Company Limited

Tencent Technology (shenzhen) Company Limited

Nuctech Jiangsu Company Limited

Cints Co., Ltd.

Hytera Communications Corporation Limited

Beijing Friendship Hospital, Capital Medical University

Nuray Technology Co., Ltd

Crsc Research & Design Institute Group Co., Ltd.

Grandpect Company Limited

Nectech Company Limited

Sonoscape, Inc.

Zhiqiang Chen

Yuanjing Li

Ziran Zhao

Li Ni Zhang

Yaohong Liu

Qingjun Zhang

Kejun Kang

Jianmin Li

Haifeng Hu

Shangmin Sun

Hua Peng

Xin Jin

Qiang Li

Yu Hu

Jian Zhang

Wei Li

Ming Hu

Li Feng Zhang

Wei Wang

Hong Wang

Peng Liu

Yinong Liu

Liang Li

Ge Li

Guang Yang

Ying Li

Shuo Wang

Hui Li

Yi Wang

Yue Li

Hui Zhang

Bo Li

Feng Gao

Yuan He

Tao Wang

Rui Fan

Hui Jin

Bo Zhang

Jian Li

Yan Wang

Jing Li

Dong Li

Lei Liu

Wanlong Wu

Yuxiang Xing

Qingping Huang

Jianping Gu

Qiufeng Ma

Yulan Li

Yunda Sun

Jianping Chang

Xiang Zou

Xuewu Wang

Yingkang Jin

Xilei Luo

Weiping Zhu

Bin Sang

Ming Ruan

Jinyu Zhang

Quanwei Song

Junli Li

Biao Cao

Chuanxiang Tang

Chunguang Zong

Huaping Tang

Li Zhang

Yumin Yi

Hu Tang

Huaibi Chen

Bin Hu

Ming Chang

Zhijun Li

Hao Yu

Yan Zheng

Nan Jiang

Hongqiu Wang

Weifeng Yu

Yonggang Wang

Lan Zhang

Juan Zheng

Cong Liu

Tongtong Wang

Hui Yang

Lin Y Yang

Kai Wang

Hong Mei Zhang

Tao Yang

Hui Xing Wang

Zheng Li

Ke Zhao Li

Meng Wang

Min Li

Jie Shi

Jian Wu

Yu Wang

Dawei Shi

Jianjun Li

Wenbin Yang

Haitao Jiang

Provided is a server of a checking system based on a millimeter wave security inspection device, connected to a security inspection instrument through a switching system, the server includes a memory and a processor, the memory stores instructions, and the instructions, when executed by the processor, cause the processor to: receive a scanned image of an object and an ATR image interpretation result of the object from the security inspection instrument, wherein the ATR image interpretation result is obtained by the security inspection instrument performing an automatic threat recognition (ATR) image interpretation on the scanned image, and perform a manual inspection task on the object and perform an image interpretation task on the scanned image according to a working mode, wherein the working mode indicates whether the checking system is provided with a manual inspection station and an image interpretation station.

Checking method and checking system based on millimeter wave security inspection device and server

Provided are an odor sniffing device () and a vehicle-mounted security inspection apparatus for a container (). The odor sniffing device () includes a primary sampling front end (), which has a vent adapter (-) having a shape matching with a vent of the ventilator of the container, so that when the primary sampling front end () fits with the ventilator, the vent adapter (-) and the vent generally cooperate to achieve fluid communication. The vehicle-mounted security inspection apparatus () may perform imaging inspection and chemical inspection simultaneously.

Odor sniffing device and vehicle-mounted security inspection apparatus for container

The present disclosure relates to an imaging system and method for radiographic inspection. The imaging system for radiographic inspection includes an inspection area including an imaging area; a first ray source assembly, all the first targets of which are arranged in a first ray source plane; a first detector assembly, the plurality of first detector units of which are arranged in a detector plane, the detector plane and the first ray source plane are spaced apart from each other in a travelling direction of the object under inspection with a predetermined distance; and a ray source control device, configured such that when the region of interest of the object under inspection is at least partially located in the imaging area, the first ray source assembly emits X-rays simultaneously from at least two first targets to the imaging area at the same time.

Imaging system and method for radiographic inspection

A method of inspecting a vehicle includes: acquiring a to-be-inspected image of an inspected vehicle (S); acquiring a visual feature of the to-be-inspected image using a first neural network model (S); retrieving a template image from a vehicle template library based on the visual feature of the to-be-inspected image (S); determining a variation region between the to-be-inspected image and the template image (S); and presenting the variation region to a user (S). The system of inspecting a vehicle includes a radiation imaging device (), a display device (), an image processor (), and a storage device (). The present disclosure further includes a computer-readable storage medium.

Method and system of inspecting vehicle

The present application relates to a deflection electrode assembly, an X-ray source, and an X-ray imaging system. The deflection electrode assembly includes: a first electrode plate, including a first connection portion and a plurality of first tooth portions, wherein the first electrode plate is formed as a comb shape; and a second electrode plate, including a second connection portion and a plurality of second tooth portions, wherein the second electrode plate is formed as a comb shape. The first electrode plate and the second electrode plate are not in contact with each other, and the plurality of first tooth portions and the plurality of second tooth portions are arranged at least partially in a staggered manner to form a plurality of electron beam passageways; each electron beam passageway is located between adjacent first and second tooth portions.

Deflection electrode assembly, X-ray source, and X-ray imaging system

A conveying device () and an inspection system () are provided. The conveying device includes: a first support frame (); a first conveying mechanism () and a second conveying mechanism () which are installed on the first support frame; and a switching mechanism () configured to selectively lift the first conveying mechanism or the second conveying mechanism in a vertical direction, such that the first conveying mechanism or the second conveying mechanism carries goods () and conveys the goods in a first horizontal direction or a second horizontal direction different from the first horizontal direction. The conveying device may achieve a positioning and a smooth continuous conveying of goods, and achieve a smooth conveying and a calibrated positioning of the goods in different postures.

Conveying device and inspection system

A trace detection device including: an ion mobility tube; a sampling gas path module; a sample injection gas path module configured to introduce a sample carrier gas containing a sample collected by the sampling gas path module toward the ion mobility tube; and a gas chromatography apparatus capable of pre-separating the sample carrier gas, so as to form a pre-separated sample carrier gas; wherein the sample injection gas path module is further configured to be capable of switching between a first mode and a second mode, in the first mode, the sample injection gas path module introduces the sample carrier gas into the ion mobility tube; and in the second mode, the sample injection gas path module introduces the sample carrier gas into the gas chromatography apparatus to pre-separate the sample carrier gas, and the pre-separated sample carrier gas is introduced into the ion mobility tube.

Trace detection device

Disclosed is an adaptive control method and system for train operating condition identification. The method includes acquiring train operating state data under various traction conditions and calculating traction and braking performance data. An adhesion condition characteristic data set is formed, and train adhesion conditions are divided into Ngrades based on this data set, where Nis a natural number. The current adhesion condition grade Nis identified using the number of adhesion condition grades and current operating state data, where N≤N, establishing a mapping relationship between an adhesion coefficient and maximum deceleration for braking under the identified grade. An optimal train protection curve is generated. By clustering and grading adhesion conditions through a clustering algorithm, the method achieves more accurate adhesion condition analysis. Adaptively generating optimal train protection curves based on adhesion condition grades enhances the reliability and safety of train operations.

Adaptive control method and system based on train operating condition identification

The present invention relates to a backscatter imaging device, a control method and an inspection system. The backscatter imaging device includes a ray source assembly configured to emit rays to a scanning area; a backscatter detector array including a plurality of backscattering detectors and configured to receive scattered photons when the rays are backscattered by an object within the scanning area; and a first collimator assembly including a plurality of first collimating channels corresponding to the plurality of backscatter detectors respectively, arranged on one side of the backscatter detector array adjacent to the scanning area, and configured to align the scattered photons when the rays are backscattered by the object, and the plurality of backscatter detectors receive scattered photons corresponding to a plurality of depths in the object respectively; and at least part of the plurality of first collimation channels have an adjustable collimation angle.

Backscatter imaging device, control method and inspection system

Provided are a CT scanning method and system, an electronic device, and a computer-readable storage medium. The method includes: determining a first coordinate of a mark point of a part to be imaged in a dual-camera coordinate system; converting the first coordinate into a second coordinate of the mark point in a CT coordinate system according to coordinate system transformation parameters; generating first locating information according to the second coordinate to drive a scanning table to move to a first location designated by the first locating information; obtaining projection images of the part to be scanned; determining second locating information and scanning information of the part to be scanned according to the projection images; and driving the scanning table to move to a second location designated by the second locating information according to the second locating information and performing CT scanning according to the scanning information.

CT scanning method and system, electronic device, and computer-readable storage medium

Embodiments of the present application disclose an optical fiber connection detection method and a related device. A first network device obtains first label information, which indicates a target optical output interface, and the target optical output interface is one of at least one optical output interface of the first network device; the first network device generates an optical signal, where a wavelength of the optical signal is within a wavelength range corresponding to the target optical output interface; the first network device modulates the first label information onto the optical signal, to generate a modulated optical signal; and the first network device sends the modulated optical signal from the target optical output interface to a target optical input interface of a second network device, to detect an optical fiber connection relationship between the target optical output interface and the target optical input interface.

Optical fiber connection detection method and related device

The method includes: receiving an encoder signal and a ray machine output beam signal, and initially synchronizing the encoder signal and the ray machine output beam signal; recording coded value M of the encoder at moment t, and coded value N of the encoder at moment t, where M, N, and m are integers; determining that duration from the moment tto the moment tis an actual output beam time interval T of the ray machine, when it is determined that a difference value between the coded value M and the coded value N satisfies preset value a, a being an integer; determining gap time Tin the actual output beam time interval T based on a preset output beam time interval Tof the imaging system and the actual output beam time interval T; and controlling the ray machine not to emit beam within the gap time T.

Method and device for controlling output beam of ray machine in imaging system, and CT imaging system

A security inspection apparatus and a method of controlling the same are described. An example security inspection apparatus includes a bottom plate configured to carry an inspected object and a two-dimensional multi-input multi-output array panel, including at least one two-dimensional multi-input multi-output sub-array. Each two-dimensional multi-input multi-output sub-array includes transmitting antennas and receiving antennas arranged such that equivalent phase centers are arranged in a two-dimensional array. The security inspection apparatus includes a control circuit configured to control the transmitting antennas to transmit a detection signal in a form of an electromagnetic wave to the inspected object in a preset order, and to control the receiving antennas to receive an echo signal from the inspected object. The security inspection apparatus includes a signal processing device configured to reconstruct an image of an inspected object based on an echo signal received and a display device configured to display the reconstructed image.

Security inspection apparatus and method of controlling the same

A semantic-based method and apparatus for retrieving a perspective image, an electronic device and a computer-readable storage medium are provided. An method includes obtaining a perspective image for a space containing an inspected object therein. A semantic division on the perspective image is performed using a first method, to obtain a plurality of semantic region units. A feature extraction network is constructed using a second method. Based on the perspective image and each of the plurality of semantic region units, a feature of each semantic region unit is extracted using the feature extraction network. Based on the feature of each semantic region unit, an image most similar to the semantic region unit is retrieved from an image feature database, to assist in determining an inspected object in the semantic region unit.

Semantic-based method and apparatus for retrieving perspective image

The present disclosure provides a method of determining a distance and a height, including: measuring, a first distance, a second distance and a third distance from the security inspection device to the tested person as well as measuring a first height, a second height and a third height of the tested person; determining, a relationship between the first distance and a minimum distance threshold as well as a maximum distance threshold, a relationship between the second distance and the minimum distance threshold as well as the maximum distance threshold, and a relationship between the third distance and the minimum distance threshold as well as the maximum distance threshold; determining, a final distance from the security inspection device to the tested person and a final height of the tested person; and performing a pixel conversion and a size conversion on the pupil image of the tested person.

Method and device of determining distance and height based on a plurality of sensors

Growing community of inventors

Beijing, China

Zhiqiang Chen